41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
--- fiasco/snapshot/kernel/fiasco/src/kern/kernel_uart.cpp 2008-07-30 13:19:01.000000000 +0200
|
|
+++ fiasco/snapshot/kernel/fiasco/src/kern/kernel_uart.cpp 2013-06-10 14:21:54.183996620 +0200
|
|
@@ -72,6 +72,12 @@
|
|
if ( (s = strstr(cmdline, " -comport "))
|
|
||(s = strstr(cmdline, " -comport=")))
|
|
p = strtoul(s + 10, 0, 0);
|
|
+ else
|
|
+ {
|
|
+ unsigned short bda_comports = (*((unsigned short *)0x410) >> 9) & 0x7;
|
|
+ if (bda_comports)
|
|
+ p = *((unsigned short *)0x400);
|
|
+ }
|
|
|
|
if ((s = strstr(cmdline, " -comirq=")))
|
|
i = strtoul(s + 9, 0, 0);
|
|
--- fiasco/snapshot/l4/pkg/bootstrap/server/src/startup.cc 2008-07-30 13:19:01.000000000 +0200
|
|
--- fiasco/snapshot/l4/pkg/bootstrap/server/src/startup.cc 2014-04-07 11:09:34.483037907 +0200
|
|
@@ -709,11 +709,21 @@
|
|
if (mbi->flags & L4UTIL_MB_CMDLINE)
|
|
{
|
|
const char *s;
|
|
- int comport = 1;
|
|
+ int comport = -1;
|
|
|
|
if ((s = check_arg(L4_CHAR_PTR(mbi->cmdline), "-comport")))
|
|
comport = strtoul(s + 9, 0, 0);
|
|
|
|
+ if (comport == -1) {
|
|
+ /* try to read Bios Data Area (BDA) to get comport information */
|
|
+ unsigned short comport_count = (*((unsigned short *)0x410) >> 9) & 0x7;
|
|
+ if (comport_count)
|
|
+ comport = *((unsigned short *)0x400);
|
|
+ else
|
|
+ /* give up and try default values */
|
|
+ comport = 1;
|
|
+ }
|
|
+
|
|
if (check_arg(L4_CHAR_PTR(mbi->cmdline), "-serial"))
|
|
com_cons_init(comport);
|
|
}
|